Concrete-mixer.



0. E. BATHRIGK. ONGBETB MIXER.

summon rILnD Jun: 2n, me.

920,41 6. Patented may 4, 1909.

3 SHEETS-SHEET 1.

Yigg f.

l if@ Patented May 4, 1909.

3 BHEETB-SHBET 3.

UNITED sTATEs PATENT OFFICE..

VllARLltS li. lA'lIlIrlCIx', 0l CI'IIUAUO, ILLINOIS, ASSIUNUR T() FREDERICK C. AUSTIN, OF

. i CHICAGO, ILLINOISv CONCRETE-MIXER.

Specification of Letters Patent.

Patented May4, 1909.

Application led June 29, 1906. Serial No. 324,077.

lh it known that l, (hrAnLEs E. BA'rnlnoK, n citizen ofthe United States, residing at Chirzigo, in ilu` county or Cook nndtsto of Illinois, havo invented certain noiv and useful .inIprUverm-mts in Concretdhlixors, of which the following is n specification.

M y invention relates toimprovementsin .mixing nnurhines for oonoroto and the like in- ,mixing recontarle with eflcient mennsvfor breaking up lumps of snnd and th` like dm ing' the operntion of mixing concrete, and to adopt such breaking moons to accentuate the 'peculiar operation of the eubieal mixing reventricle. Also to nrvoid retardation of the mixing notion, sind to avoid retardation of discharge when tli-e mixingf receptacle is tilted for such pur-noso. y

ln tho accompanying drawings: Figure l is n. side elevation of a. mixingr machine in which rnyinifention understdod to be om bodied. Fig. 2 is a longitudinal section when through lig'. 1 on o vertical central plnne,`th mixing reroilairle in Fig. l boing in the usual iniilin;r position, while in Fig. 2 it is tilted lor the purpose oi discharging its con tents. Figi. 3 is zin isometric perspective vien`- of the ruhe-sintomi mixing; receptacle with co1 tuin fnll find dotted lines illustrating' tho lelative 'position of the breakers, Fig. 4 is n oentrsl section through the Cube mixing;

receptacle on n plaine through and coincident with the diagonal axis of rotation, the breakers boing; formed by rhziinS, whilf` in Fig. 2 tho breakers are formed by rods.

The oubifornr nixing box or receptacle A is nronntod uponl n tiltingl freine or support B and arranged thereon so as to revolve about :t digonal axis. This cubieal mixing` receptacle is provided with a `ohm-ging open ing,r i anda discharging openingr 2, these two openings being concentric or substantially oonentrie `witl1 the diagonal axis of rotation, The discharging opening is also prolonged by a spout or 'nozzle 3, particularly when itis in tended toprovi-do a charging opening 1 and I to use the opening 2 for discharge only. The' box can he charged from any suitable chute, hopper or the like., in any suitable Way. Preferably the tilting support B is in position to maintain the diagonal axis of` rotations horizontal or snbstantiiilly so, as in Fig. 1, duringl the mixing operation, and to dischin-ge a mixed-n1, batch of onorote the sup port B can he `tilted as in Fig. 2. The mixing receptacle is continuously revolved about the diagonal :ixis by 'any suitable driving means, for example, the mixing receptacle is journalod on the tiltingsnp ort B and provided with a ringrgq'csir U, Whio ris understood to be engaged by n pinion on e; rotary driving, shaft 4. Means for tiltingr the suppQrtB, `are not shown, as the saine. gire now Woll known in the girt. l

During the process of mining ,ooncreteit frequently happens that lumps of sand are supplied to the mixing receptacle, andit frequently "happens that these lumps are not broken up during the` mixing operation, whereby ini )effect and faulty work results. Blades or li e ngitators in concrete mixers have also beenavoided it possible, owing to thefaot that while they tend to break up large lumps in cose tho lumps Contact therewith during operation, the' presence of slargo number of blades or like iigibotors Collect Inateriol whirh adheres thereto ond `soon becomes hard, thereby necessitating time and expense in oleo-nino` ont the mixer. It is also evident that this trouble will increase proportionally to on increase in the number ol zigitntors employed.

ln carrying ont my invention, tho interior oi the onlie or enbil'orxn mixingr receptacle. is provided with o. series of breakers consisting ol' short rods or Chninsnttnehed at their ends to the planos which constitute the sides of the onhionl receptacle and arranged to cross .certain singles thereof, nach breaker bein in elloet the hypotenuse of nnnngle, or in ot 1er words, forming the hypotenuse'of an angle produced hythe intersection oft'wo of such planes.

This arrangement has speoiiil relation to thesietion of the oubioal box on recontarle upon :i contained muss of concreto when the reeeptoole is revolved about a diagonal exis, and aooentuates the peculiar action involved while the axis of the revolvinJr receptacle is in repose, 1as inthe o `eration of mixing.' and while slclraxis o the.

still revolvingr box is being t" tod for the purpose ol' discharging the product. When the diagonal axis ofthe cubical mixing receptacle is horizontal or substantially so, and suoli rnbical mixing rece tacle is revolved, each ol the six sides or p anes of such receptacle acting alternately in one revolution serves to throw the concrete from a plane following a eurve of ascension against a plane with a curve of descension. lhis'change of posi tion with regard to the contents of the cubical receptacle occurs with each one sixth revolution of the cubical receptacle about its axis, and thus the concrete is thrown from one side to another of the cube `six times, during one revolution. At the same time that these lateral movements of the mass *of concrete are being alternately produced by the angles of the planes or sides of the receptacle tothe plane of the axial revolution, the whole mass of concrete is being lifted along the planerof. axial revolution until the angle of repose "for,

the material is passed, when it gravitates back along lines of direction which intersect the paths of particles projected by the alternating ositions ofthe sides of the cube in its revo ution.

The angles reduced by the breakers and intersecting p anes or sides of theA cubical box or receptacle have their vertices in a plane transverse to the diagonal axis of rotation and midway of the'opposite openings or corner portions of the box through which such axis extends. Th is arrangement is illus trated in Fig, 4 by the assistance of dotted line 5, which indicates a plane transverse to the diagonal axis of rotation and midway of the diagonally opposite open corner portions of the cubical mixing receptacle, each of the three breaker chains 6, therein shown being the hypotenuse of a triangle whereof the apex is intersected by the plane indicated by said dotted line. The breakers cross the angles formed by intersecting sides or planes at )oints midway of certain corners of the cubical box, as best illustrated in Fig. 3. In this iigure which is an isometric perspective view of a cube, the six angles ormed by breaker rods or chains in conjunction with intersecting sides or planes are as follows: The two sides of one angle are indicated by full line 7 and dotted line 8, and the hypotenuse of such angle formed by a breaker rod or chain is indicated by dotted line 9. The two sides of the next angle are indicated by full lines 10 and 11, and theh potenuse consisting of a breaker rod or c iain by dotted lines 12. The two sides of the next angle are indicated by full lines 13 and 14, and the hypotenuse consisting of a breaker rod or chain by dotted lines l5. The two sides of the next angle are indicated by full line 16 and dotted lines 17, and the hypotenusc consisting of a breaker rod or chain by dotted `line 18. The sldesolA the next angle are indicated bv dotted lines 19 and 20, and the hypotenuse consisting ol a portions of the angles formed by intersecting planes are flattened down,4 but in this rase as in the case of Figs. `3 and 4, the angles formed by the breakers and tinI sides involve apices formed by intersecting pianos in which suehsides are arranged. The breaker rods or chains thus arranged, rapidly and ellert- `ively break up lumps of sand andv the like,

and do not retard the foregoing described ieculiar movement of the mass of materialA o the contrary, tn ey accentuate surh move nient and also dotnet retard the ejection ol the concrete when the cubical mixing rcc cptacle is tilted as in Fig. 2 and revolved.

This arrangement therefore avoids clogging and freedischarge, and also imiterially assists in the operation of mixing. lt also involves a minimum number ol breakers in position to produce what may be termed a maximum cllect/j'l v The term substantially eubil'orrn hereinafter employed in the claim, is intended to cover a mixing receptacle sullicicntly similar toa cube to involve. substantially the charm-ftcristic mixing action hereinbel'oro described. 'lhe apiecs of the triangle involving the breaker rods or chains are all sli-own in thc n u plane herelnbeiore dcscrlbed, but l desire to also cover the apices substantially in such plane, and at polnts either midway or subn stantiall midway of certain corners ol' the receptaclia whereby the relative arrangement of breaker rods or chains is substantially as set forth, in order to provide adjunotivo means for breaking Aup lumps and also serving to accentuate the peculiar mixing action described.

T he general action ofthe cube shownin Fig. 11, is further illustrated by the fact that when it is revolved about a diagonal axis passingthrough the twocorner portions' reserved for charging and discharge openings, the three of the six remaining corners will move in one and the other remaining three in another ol two parallel planes `transverse to the axis of rotation and parallel with a trans verse plane intersecting the mixing receptacle at points between these last mentioned corners and indicated by dotted line 5 in Fig. 4, and where the breakers are arranged substantially as' therein shown, tlfeir points of attachment are in or substantially in series in lll) transverse revolve, said planes being respectively at o pcsite sides of and parallel with the mid e plane indicated by dotted line 5. It will also be seen that with reference to the i cut away corners through which the diagonal axis of rotation passes, the transverse plane indicated by dotted line 5 is between such corners and that the breakers arranged in series 'about the axis of rotation intersect said plane and are oblique thereto.

W hat l claim as my invention is:

ln a machine for mixing concrete, and the like, a cubiforrn or substantially cubiforin mixing receptacle mounted upon a tilting i planes parallel or substantially ,parallel with 1 support and arranged to revolve about a di- 'the two planes in which the said six corners agonal axis, and breakers consisting of chains or rods arranged wltlnn the mlxing receptacle in annular' series about the axis of rotation, 5

the breakers in conjunction with intersecting planes or sides of the receptacle forming a series of triangles, the apices of which are in or substantially in a plane transverse to and intersecting the axis of rotation, said plane also being oblique to and intersecting each breaker forming the hypotenuse of a triangle such as herein set forth.

CHARLES E. BATHRICK- W itnesses:

(libraries PAGE, O'r'riliin U. Famenne; 

